Introduction

To generate Blood Bullets, press up on the D-Pad; doing so will give you five Blood Bullets, at the cost of ~30% health. Rally can be used for a short time afterwards to regain the health lost. Blood Bullets act the same way as normal Quicksilver Bullets do, except they deal slightly more damage. You can only have 5 Blood Bullets at one time.

Official Description

Blood Bullets are crafted with your own blood and can replace Quicksilver Bullets for use in firearms. Press triangle to restock a Blood Bullet at the cost of HP. Blood Bullets are lost upon death or upon entering the Hunter's Dream.

Notes

When used in conjunction with the Cannon firearm, it is possible to fire two Cannon shots.

The rally period after using Blood Bullets is shorter than it normally is when you receive damage. (Needs to be tested)

Blood Bullets are consumed before Quicksilver Bullets.

Blood Bullets cannot be created if you have less than 30% HP.

Blood Bullets can be created if you already have some Blood Bullets remaining, though you will not get more than 5, and you will still sacrifice 30% HP.